Began with a phone interview with recruiter. Asked why I was interested, what my expectations were, all that... He then scheduled an interview on-site with the hiring manager.
On-site interview was very laid back. Simple questions about my resume and hypothetical situations about dealing with clients/leads. He then went through the negatives of the job ("we are basically glorified filters for the salesmen") and asked if I would be okay with that.
One interesting point: I asked for him to describe the culture there. He said if the culture had a personality it would be that of an entitled punk teenager. (I would agree after being there 30 minutes.)
After 30 - 45 minutes, he brought in the rest of the team to ask me questions. Really ad-hoc questions to get a feel for personality and work habits.